Heatsink thermal module with noise improvement

ABSTRACT

The invention provided a heatsink thermal module with noise improvement, which has a heatsink thermal module additionally consisting of a heat pipe, a heatsink fins set and a fan module; the fan module is combined with the heatsink fins set which consists of multiple heatsink fins with different lengths and is combined to the fan module with its end with a special geometric shape having the function of lowering the wind drag; by lowering the wind drag, not only the heat dissipation efficiency can be increased, but the noise caused by the heatsink thermal module can also be improved.

BACKGROUND OF THE INVENTION

1. Field of the Invention

This disclosed invention relates to a heatsink thermal module with noiseimprovement, and particularly a thermal module with noise improvementwith a heatsink fins set consisting of multiple heatsink fins withdifferent lengths to achieve the objective of lowering the wind drag.

2. Description of the Related Art

Following the progress in information technology, the design ofcomputers changes rapidly; the computers are designed to be lighter,slimmer, smaller and portable, and the requirement on their speed ofdata processing gets higher and higher; relatively, the designconcerning the heat dissipation efficiency of heat generatingcomponents, such as central processing unit (CPU) and video graphicsarray (VGA) chips, become the key point and is especially challengingfor light weight and easy carriage notebook computers.

The heatsink thermal modules used by the CPU or other heat generatingcomponents of notebook computers are usually made of highheat-conductive metal, which, by contacting the heat generatingcomponent of computers, transmits the heat to the heatsink fins set and,by means of the fan which provides strong cooling airflow toward theheatsink fins for heat exchange. The cumulated heat on the heatsink finsset can thus be brought away.

The heatsink fins set of conventional thermal modules is mounted on theairflow outlet to hinder the cooling airflow from increasing the winddrag; the higher the wind drag is, the lower the efficiency of coolingis and the more noise is produced. As shown in FIGS. 1A and 1B, whichillustrate respectively the conventional heatsink module and thevelocity profile diagram of the airflow outlet of the conventionalheatsink module, the test is run by processing the data collected fromthe sensor which detects the airflow speed at a two-centimeter intervalon the outer side of the fan module 100 from left to right (thedirection is shown by the arrow D of FIG. 1A), and, as a result, thetotal airflow speed is 257.37 m/sec. As shown in FIGS. 2A and 2B, whichillustrate respectively the conventional heatsink module and thevelocity profile diagram of the airflow outlet of the conventionalheatsink module; after the combination of the fan module 100 and theheatsink fins set 102, the total airflow speed drops from original257.37 m/sec to 137.21 m/sec, which proves that the wind drag ofconventional heatsink fins set 102 is rather elevated and the noiseproduced by the heatsink thermal module 101 is also higher. Users whowork in a highly noisy environment over a long period of time wouldsuffer from neurasthenia and absentmindedness which result in lowerworking efficiency.

For this, this invention provides a heatsink thermal module which canimprove the unbalanced heat dissipation and the noise caused by the fanmodule and efficiently settles the above-mentioned defects.

SUMMARY OF THE INVENTION

In view of the problems of conventional techniques, the main purpose ofthis invention is to provide a heatsink thermal module with noiseimprovement which has the function of lowering the wind drag, raisingconsequently the heat dissipation efficiency and improving effectivelythe problem of the noise caused by the heatsink thermal module.

For attaining the above-mentioned purposes, this invention provides aheatsink module with noise improvement comprising a heatsink modulewhich consists additionally of a heat pipe, a heatsink fins set composedby multiple heatsink fins with different lengths, and a fan module whichis combined with the heatsink fins set.

The characteristic of this invention disclosed is relating to a heatsinkthermal module with noise improvement is, by assembling multipleheatsink fins with different lengths, the construction of a heatsinkthermal module with noise improvement with the function of lowering thewind drag and improving the noise.

For better understanding of characteristics, purposes and advantage ofthis invention, the detailed descriptions of the preferred embodimentwith relating graphics are as follows:

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1A is the conventional fan module;

FIG. 1B is the velocity profile diagram of the conventional fan module;

FIG. 2A is the conventional heatsink module;

FIG. 2B is the velocity profile diagram of the conventional heatsinkmodule;

FIG. 3 is the three-dimension view of the present invention;

FIG. 4 is the perspective three-dimension view of the present invention;

FIG. 5 is the three-dimension view of the heatsink fins set of thepresent invention; and

FIG. 6 is the velocity profile diagram of the present invention.

DETAILED DESCRIPTION OF THE INVENTION

As shown in FIG. 3 and FIG. 4, which are respectively thethree-dimension view and the perspective three-dimension view of adesired embodiment of the heatsink thermal module with noiseimprovement, a heatsink thermal module 201 additionally consists of aheat pipe 103, a heatsink fins set 202 and a fan module 200 which iscombined with the heatsink fins set 202.

Wherein the heat pipe 103 is made of highly heat-conductive materialwith its one end thermally connected to the heatsink fins set 202 andthe other end thermally connected to the heat-conductive plate 104 totransmit the heat generated by the heat-generating component to theheatsink fins set 202, the heat pipe 103 homogeneously diffuses the heatto the heatsink fins set 202 during the heat-conducting process.

As shown in FIG. 5, which illustrates the three-dimension view of theheatsink fins set of this invention, the heatsink fins set 202 iscomposed of multiple parallel heatsink fins with different lengths whereeach heatsink fin is in form of slice. The heat pipe 103 thermallyconnects with each heatsink fin by penetrating its center for equivalentheat-conducting distance. By the spread of the heatsink area of theheatsink fins set 202, the heat transmitted by the heat pipe 103 can beeffectively diffused and spread. The fan module 200 generates thecooling airflow which is parallel to the direction of the longitudinalaxis of the heatsink fins for bringing away the heat cumulated on theheatsink fins set 202 by heat exchange between the cooling airflow andthe heatsink fins set 202. The objectives of lowering the temperatureand increasing the heat dissipation efficiency can thus be achieved.

Furthermore, the heatsink fins set 202 contains an airflow outlet 204with the linear cut appearance and an airflow entrance 203 next to thefan module 200 with an adequate geometric shape such as the shape of aconjugate curve, an involute curve or any inward concave which makes theheatsink fins at its two sides longer than those at its center part,which can lower the wind drag by the special shape of the heatsink finsset 202 when the fan module 200 generates cooling airflow toward theheatsink fins set. Consequently, the objective of faster heatdissipation is achieved. Since the main purpose of the heatsink thermalmodule 201 is to conduct, transmit and dissipate heat, the materialchosen for its fabrication shall be high-temperature resistant and highheat-conductive. The metal copper is utilized in this embodiment.

As shown in FIG. 6, which is the velocity profile diagram of thisinvention, the airflow of the cooling airflow generated by the fanmodule 200 blows toward the heatsink fins set passes each testing pointon the airflow outlet 204 at a total airflow speed of 174.61 m/sec whichshows a significant increase comparing to the FIG. 2 where the testingresult (137.21 m/sec) of conventional heatsink fins set 102. It is thusclear that the design of this invention can lower the wind drag of thecooling airflow generated by the fan module 200 toward the heatsink finsset 202 and since the lower the wind drag is, the lesser the volume, theobjective of noise improvement can therefore be achieved.

The characteristic of this invention disclosed is concerning a heatsinkthermal module with noise improvement is that, by assembling metal finswith different lengths, a special designed heatsink fins set 202 isstructured to improve the heat dissipation efficiency and to lower thenoise. We see that this invention satisfies the noise-improvementrequirement comparing to the conventional heatsink thermal modules.

While the present invention has been described with reference to apreferred embodiment, the description is illustrative of the inventionand is not to be construed as limiting the invention. Variousmodifications to the present invention can be made to the preferredembodiment by those skilled in the art without departing from the truespirit and scope of the invention as defined by the appended claims.

1-9. (canceled)
 10. A heatsink fin module for reducing wind noisecomprising: a heat pipe; and a heatsink fins set of a curved shape, theheatsink fins consisting of multiple heatsink fins with differentlengths and extending from an upper surface of the heatsink fin moduleto a lower surface of the heatsink fin module, wherein the heat pipe isformed to penetrate the heatsink fins so as to thermally connect witheach of the heatsink fins.